SpringMVC之Ambiguous mapping（模棱两可的映射）

1、web.xml和核心配置文件的编辑见上篇http://blog.csdn.net/u010101142/article/details/55005330；

2、还是HelloController类：

package com.slz.hello.controller;import org.sPRingframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;@Controller@RequestMapping("/hello")public class HelloController {	@RequestMapping(path={"/hello","/slz.html","/*/benboba.php","/**/baboben.aspx","/ab*.htm"})	public ModelAndView hello(){		System.out.println("Hello World!");		ModelAndView mav = new ModelAndView();		mav.setViewName("hello");///WEB-INF/hello.jsp		return mav;	}		@RequestMapping(path={"index"})	public ModelAndView index(){		System.out.println("Hello Index!");		ModelAndView mav = new ModelAndView();		mav.setViewName("index");///WEB-INF/index.jsp		return mav;	}		@RequestMapping(path={"index","indexAmbiguous"})//调用时报错，Ambiguous mapping,模棱两可的映射	public ModelAndView indexAmbiguous(){		System.out.println("Hello Index!");		ModelAndView mav = new ModelAndView();		mav.setViewName("index");///WEB-INF/index.jsp		return mav;	}	//	@RequestMapping(path={"index"})	//启动时报错，Ambiguous mapping,模棱两可的映射//	public ModelAndView indexAmbiguous02(){//		System.out.println("Hello Index!");//		ModelAndView mav = new ModelAndView();//		mav.setViewName("index");///WEB-INF/index.jsp//		return mav;//	}}3、注意如果方法（不一定在同一个类）的RequestMapping路径中存在相同的path值（默认访问方法为get，比如index()和indexAmbiguous02()），启动时会报Ambiguous Mapping异常;也会有调用时才报Ambiguous Mapping异常，比如index()和indexAmbiguous();
4、新建MethodAmbiguousController：
package com.slz.hello.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.servlet.ModelAndView;@Controllerpublic class MethodAmbiguousController {	//启动没问题，	//testMethod01和testMethod02方法共存时，则：执行getMethod方法，根据方法类型选择执行的方法	//testMethod03方法与其他两个方法共存时，则：执行getMethod方法，根据请求类型报错	//（Ambiguous handler methods mapped for HTTP path 'http://localhost:8080/mvc/getMethodAmbiguous'）	@RequestMapping(path="getMethodAmbiguous",method=RequestMethod.GET)	public ModelAndView testMethod01(){		System.out.println("getMethodAmbiguous");		return null;	}	@RequestMapping(path="getMethodAmbiguous",method=RequestMethod.POST)	public ModelAndView testMethod02(){		System.out.println("getMethodAmbiguous");		return null;	}	@RequestMapping(path="getMethodAmbiguous",method={RequestMethod.GET,RequestMethod.POST})	public ModelAndView testMethod03(){		System.out.println("getMethodAmbiguous");		return null;	}}
总结：出现Ambiguous Mapping异常时，找到同一请求路径映射到两个方法的地方，修改即可～